Although Android 7.1.1 Nougat has been around for more than a year, the Moto G4 Play did not get it until now. Even with this delay, it is still a good thing to offer the update to a phone that is almost two years old and arrived on the market for just US$99.
https://www.notebookcheck.net/Moto-G4-Play-finally-gets-Android-7-1-1-Nougat.276916.0.html